Nov, 2010
Electronic structure of pristine and K-doped solid picene: Nonrigid band change and its implication for electron-intramolecular-vibration interaction
PHYSICAL REVIEW B
- Volume
- 82
- Number
- 19
- First page
- 195114
- Last page
- Language
- English
- Publishing type
- Research paper (scientific journal)
- DOI
- 10.1103/PhysRevB.82.195114
- Publisher
- AMER PHYSICAL SOC
We use photoemission spectroscopy to study electronic structures of pristine and K-doped solid picene. The valence band spectrum of pristine picene consists of three main features with no state at the Fermi level (E(F)) while that of K-doped picene has three structures similar to those of pristine picene with new states near E(F), consistent with the semiconductor-metal transition. The K-induced change cannot be explained with a simple rigid-band model of pristine picene but can be interpreted by molecular-orbital calculations considering electron-intramolecular-vibration interaction. Excellent agreement of the K-doped spectrum with the calculations points to importance of electron-intramolecular-vibration interaction in K-doped picene.
- Link information
- ID information
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- DOI : 10.1103/PhysRevB.82.195114
- ISSN : 1098-0121
- Web of Science ID : WOS:000284047100004